22. —You've made great progress in your English study, haven't you?
—Yes, but much____________.
| A．remains to do | B．is remained to do | C．remains to be done | D．is remained to be done |
It came as_______ surprise that Poland’s President and scores of its top officials were killed in _______ air crash in Russia.
| A．不填; the | B．a; an | C．a; 不填 | D．the; an |
. ―Thanks for the ride home!
―_______
| A．Don’t mention it. | B．With pleasure. |
| C．Never mind about that. | D．That’s right. |
The expo is being held in Shanghai, _______a lot of advanced technology is shown for the first time.
| A．why | B．which | C．when | D．where |
._______, he went into the tea-house and seated himself at a little table by the window.
| A．Thirsty and tiredly | B．Thirsty and tired | C．Thirstily and tiredly | D．Thirstily and tired |
It is only when an NBA player has been through many battles _______he learns an important lesson: there is no "I" in "team".
| A．after | B．before | C．what | D．that |